She answered several questions with only "yes" or "no" responses. Bail was continued at $500,000 by state Superior Court Judge Donald J. Volkert Jr.
Guyette faces murder and other offenses in the slaying of Sujeiti (sue-HAY'-tee) Ocasio on Friday.
Ocasio was slain just hours after graduating from Newark's Barringer High School.
Authorities say the two had a dispute before the shooting.
